Buffy Alum Charisma Carpenter to Guest-Star on Blue Bloods

The Buffyand Angelalum will play Marianne Romano, a former popular girl in high school, who is now flashy, overly needy and just too obvious for a guy with a touch of class. Having had a fling with Danny (Donnie Wahlberg) a couple decades back, she calls on him for help when her bruiser-fiancée decks her in a fit of 'roid rage. But her attempt to tweak Danny's heartstrings backfires when it results in a police investigation of her boyfriend.